We are maximizing impact of solar thermal technology
by breaking solar thermal’s cost and complexity barriers

To do this, we have built an ecosystem of own brands and partners.

As an Impact Engineering firm we are dedicated to develop whatever is necessary to have a significant impact on climate change and poverty, globally. To this end we have developed our Lytefire solar oven, roasters and Saunas, our GoSol education program to create entrepreneurs and strong partnerships to scale.

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Our Brands

Lytefire is our product to rapidly enable anyone to become a solar entrepreneur.

GoSol is our community and education hub to spread the Lytefire 5 Solar Ovens to high-impact settings.

The Lytefire Sauna demonstrates the power of the sun for carbon free well-being and tourism.

Why Solar Fire

Access to clean energy is a real problem world wide


3 billion people

Need a clean source of heat every day to process food or run their business.
Today they burn charcoal, trash, LPG, biomass or rely on poor electric grids.

11 years

Remaining in order to reduce heavily carbon emissions from growth, according to the IPCC.

3 billion people

Empowered with affordable and powerful clean energy can have a very strong impact on climate change mitigation.

From our Channel

Lytefire Sauna - The Experience - Heuberge 2020

656 views, 1:29 min

Solar Sauna in the Swiss Alps - Intro

4:23 - 539 views

Scaling the Direct Solar Economy

1 584 views, 4:58 min

Free the Sun!

206,185 views, 3:16 min

Cooking in the Snow

5,356 views, 0:57 min

Latest News & Press Coverage


Friday 23 October 2020

"The sun can do everything - even bake bread"

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Solar Energy Engineering Blog

Thursday 1 October 2020

"Can Solar Thermal Energy be a Game-Changer? — Part 2"

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Solar Energy Engineering Blog

Thursday 1 October 2020

"Can Solar Thermal Energy be a Game-Changer?"

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Paris Normandie

Tuesday 22 September 2020

"Un four à pain solaire de 11 m² construit dans la région du Havre, et c’est une première !"

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Thursday 17 September 2020

"Solar Sauna - Lytefire Sauna; A sustainable, powerful and silent wellness experience at 2000 meters above sea level: The Lytefire Sauna heats up (...)

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Friday 4 September 2020

"so-talk Urs Riggenbach, Lytefire und GoSol.Solar"

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First Class

Tuesday 1 September 2020

"Saunaing with the sun"

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Wednesday 12 August 2020

"Sauberer Schwitzkasten"

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Tuesday 11 August 2020

"Sustainable wellness in the new solar sauna"

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Sponsors, Partners and Clients

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